对于没有i2c接口的单片机来说，要用标准i2c器件通讯来说只能通过软件模拟了 本程序提供几个最高效的函数实现其功能，新方法，更高效-For there is no single-chip interface for i2c, i2c devices use standard communications software simulation run only through the procedures provided by several of the most efficient function to achieve its function, new methods, more efficient

利用单片机的P32管脚进行测量频率,计时很精确-P32 pin single-chip computer to measure the frequency, timing is very precise

本人非常支持单片机设计DIY 在这里再次献出小弟的一点心意,下面是使用AT89S52驱动74HC4015,实现1选择8的数据通道切换器,可以在不8个通道出加上不同大小的电阻.可以用来单声道音量的大小控制. 下面作品图是小弟设计的廉价的 基于单片机的毕业设计 ,它还使用了无线接收发送模块,通过使用手上的遥控器能控制音量的大小,还加了一块HCF4052用于输入音道的选择,支持思路音频信号的输入,一路音频信号的输出: -I very much support the single-chip design DIY here again gave a little boy s mind is to use the following AT89S52 drive 74HC4015, to achieve a choice of 8 switches the data channel, you can not add the 8-channel resistance of different sizes. Can used to the size of mono volume control. The following work plan is designed小弟cheap graduation based on single-chip design, it uses the wireless receiver send module, through the use of the hands of the remote control can control the volume size, but also Add a piece of HCF4052 Road for the importation of sound choices, to support the idea of audio signal input, the output audio signal all the way:

51单片机（汇编）浮点转换及浮点格式说明程序--51 SCM (assembly) floating point conversion and floating point format description.

这是一个用于RS485通讯的协议转换程序,采用89S52芯片,KEIL 51开发-for RS485 communication protocol conversion procedures used 89S52 chip, KEIL 51 development

采用AT89C51单片机进行编写，步进电机端口:P1.0,P1.1,P1.2,P1.3,遥控器接口p3.2喇叭p3.7-AT89C51 single-chip microcomputer used for the preparation, stepping motor port: P1.0, P1.1, P1.2, P1.3, remote control interface P3.2 Speaker p3.7

以C8051为控制器以TI的c1101为模块的底层驱动。-With C8051 as the controller module TI s low-level driver for the c1101.

用台湾富晶单片机开发的电子称包括源码和编译器-Crystal-rich single-chip microcomputer with the development of Taiwan

飞思卡尔智能小车 AD驱动程序示例代码 芯片为MC9S12XS128-AD Freescale" s Smart car driver sample code chip MC9S12XS128

多路数据采集 +lcd +菜单功能显示 max485通信-Multi-channel Data Acquisition+ Lcd+ Menu features show MAX485 communication